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1. 发明申请

US20100278409A1 HARDWARE TUMOR PHANTOM FOR IMPROVED COMPUTER-AIDED DIAGNOSIS 审中-公开
标题翻译：硬件肿瘤细胞改进计算机辅助诊断
公开(公告)号：US20100278409A1
公开(公告)日：2010-11-04
申请号：US12746552
申请日：2008-12-12
申请人： Rafael Wiemker , Udo Van Stevendaal , Thomas Koehler , Michael Grass
发明人： Rafael Wiemker , Udo Van Stevendaal , Thomas Koehler , Michael Grass
IPC分类号： G06K9/00
CPC分类号： G06T7/0012 , A61B6/03 , A61B6/583 , G06T7/41 , G06T2207/10081 , G06T2207/10088 , G06T2207/10104 , G06T2207/20104 , G06T2207/30096 , G09B23/30
摘要： An imaging system (1) includes at least one hardware phantom (52, 54, 56, 58) which includes structural features (s, 82, 92) that mimic different structural features of tumors. A scanner (10) acquires image data for a subject (14) in a region of interest (40) and the at least one hardware phantom. A reconstruction processor (32) processes the image data to generate reconstructed image data representative of the region of interest and of the hardware phantom.
摘要翻译：成像系统（1）包括至少一个硬件体模（52,54,56,58），其包括模拟肿瘤的不同结构特征的结构特征（s，82,92）。扫描器（10）获取感兴趣区域（40）中的对象（14）的图像数据和至少一个硬件体模。重建处理器（32）处理图像数据以产生表示感兴趣区域和硬件体模的重建图像数据。

2. 发明授权

US08442184B2 Spectral CT 有权
标题翻译：光谱CT
公开(公告)号：US08442184B2
公开(公告)日：2013-05-14
申请号：US12996985
申请日：2009-06-01
申请人： Peter Forthmann , Udo Van Stevendaal , Ewald Roessl , Michael Grass , Roland Proksa , Jens-Peter Schlomka
发明人： Peter Forthmann , Udo Van Stevendaal , Ewald Roessl , Michael Grass , Roland Proksa , Jens-Peter Schlomka
IPC分类号： A61B6/00
CPC分类号： A61B6/405 , A61B6/032 , A61B6/4014 , A61B6/4035 , A61B6/4042 , A61B6/4241 , A61B6/482
摘要： An imaging system includes a radiation source (106, T1, T2, T3) that rotates about an examination region and emits radiation that traverses the examination region. The radiation source (106, T1, T2, T3) emits radiation having an energy spectrum that is selectively alternately switched between at least two different energy spectra during an imaging procedure. The system further includes an energy-resolving detector array (116, D1, D2, D3) that detects radiation traversing the examination region. The energy-resolving detector array (116, D1, D2, D3) resolves the detected radiation over at least two different energy ranges and produces energy-resolved output signals as a function of both emission energy spectrum and energy range. The system further includes a reconstructor (126) that performs a spectral reconstruction of the energy-resolved output signals. In another embodiment, the detector array (116) includes a photon-counting detector array (116).
摘要翻译：成像系统包括围绕检查区域旋转并且发射穿过检查区域的辐射的辐射源（106，T1，T2，T3）。辐射源（106，T1，T2，T3）发射具有在成像过程期间在至少两个不同能量谱之间选择性交替切换的能谱的辐射。该系统还包括检测穿过检查区域的辐射的能量分辨检测器阵列（116，D1，D2，D3）。能量分辨检测器阵列（116，D1，D2，D3）通过至少两个不同的能量范围来解析检测到的辐射，并且产生作为发射能量谱和能量范围的函数的能量分辨的输出信号。该系统还包括执行能量分辨输出信号的频谱重建的重建器（126）。在另一个实施例中，检测器阵列（116）包括光子计数检测器阵列（116）。

3. 发明申请

US20090310825A1 IMAGING SYSTEM FOR IMAGING A REGION OF INTEREST COMPRISING A MOVING OBJECT 有权
标题翻译：用于成像包含运动对象的兴趣区域的成像系统
公开(公告)号：US20090310825A1
公开(公告)日：2009-12-17
申请号：US12521899
申请日：2008-01-02
申请人： Claas Bontus , Michael Grass , Carsten Oliver Schirra , Udo Van Stevendaal , Guy Lavi
发明人： Claas Bontus , Michael Grass , Carsten Oliver Schirra , Udo Van Stevendaal , Guy Lavi
IPC分类号： G06K9/00
CPC分类号： G06T7/20 , A61B5/0402 , A61B6/027 , A61B6/032 , A61B6/469 , A61B6/503 , A61B6/504 , A61B6/541
摘要： The invention relates to an imaging system for imaging a region of interest comprising a moving object, which moves less in small motion phases than in large motion phases. Detection values are provided and a small motion determination unit (15) determines the motion of the object in the region of interest in the small motion phases from the 5 detection values. A large motion determination unit (16) determines the motion of the object in the large motion phases from the determined motion of the object in the small motion phases. A reconstruction unit (17) reconstructs an image of the region of interest from the detection values, wherein the reconstruction unit (17) is adapted for performing a motion compensation using the determined motions in the small and large motion phases.
摘要翻译：本发明涉及一种用于对感兴趣的区域成像的成像系统，该成像系统包括移动物体，该运动物体在小运动相位上比在大运动相位中运动较少。提供检测值，并且小运动确定单元（15）从5个检测值确定在小运动相位中的感兴趣区域中的对象的运动。大运动确定单元（16）根据所确定的小运动阶段中的物体的运动来确定物体在大运动相位中的运动。重建单元（17）从检测值重建感兴趣区域的图像，其中重建单元（17）适于使用在小的和大的运动阶段中确定的运动来执行运动补偿。

4. 发明授权

US08437524B2 Imaging system for imaging a region of interest in different phases 有权
标题翻译：用于在不同阶段成像感兴趣区域的成像系统
公开(公告)号：US08437524B2
公开(公告)日：2013-05-07
申请号：US12521899
申请日：2008-01-02
申请人： Claas Bontus , Michael Grass , Carsten Oliver Schirra , Udo Van Stevendaal , Guy Lavi
发明人： Claas Bontus , Michael Grass , Carsten Oliver Schirra , Udo Van Stevendaal , Guy Lavi
IPC分类号： G06K9/00
CPC分类号： G06T7/20 , A61B5/0402 , A61B6/027 , A61B6/032 , A61B6/469 , A61B6/503 , A61B6/504 , A61B6/541
摘要： The invention relates to an imaging system for imaging a region of interest comprising a moving object, which moves less in small motion phases than in large motion phases. Detection values are provided and a small motion determination unit (15) determines the motion of the object in the region of interest in the small motion phases from the 5 detection values. A large motion determination unit (16) determines the motion of the object in the large motion phases from the determined motion of the object in the small motion phases. A reconstruction unit (17) reconstructs an image of the region of interest from the detection values, wherein the reconstruction unit (17) is adapted for performing a motion compensation using the determined motions in the small and large motion phases.
摘要翻译：本发明涉及一种用于对感兴趣的区域成像的成像系统，该成像系统包括移动物体，该运动物体在小运动相位上比在大运动相位中运动较少。提供检测值，并且小运动确定单元（15）从5个检测值确定在小运动相位中的感兴趣区域中的对象的运动。大运动确定单元（16）根据所确定的小运动阶段中的物体的运动来确定物体在大运动相位中的运动。重建单元（17）从检测值重建感兴趣区域的图像，其中重建单元（17）适于使用在小的和大的运动阶段中确定的运动来执行运动补偿。

5. 发明申请

US20110096892A1 SPECTRAL CT 有权
标题翻译：光谱CT
公开(公告)号：US20110096892A1
公开(公告)日：2011-04-28
申请号：US12996985
申请日：2009-06-01
申请人： Peter Forthmann , Udo Van Stevendaal , Ewald Roessl , Michael Grass , Roland Proksa , Jens-Peter Schlomka
发明人： Peter Forthmann , Udo Van Stevendaal , Ewald Roessl , Michael Grass , Roland Proksa , Jens-Peter Schlomka
IPC分类号： H05G1/60
CPC分类号： A61B6/405 , A61B6/032 , A61B6/4014 , A61B6/4035 , A61B6/4042 , A61B6/4241 , A61B6/482
摘要： An imaging system includes a radiation source (106, T1, T2, T3) that rotates about an examination region and emits radiation that traverses the examination region. The radiation source (106, T1, T2, T3) emits radiation having an energy spectrum that is selectively alternately switched between at least two different energy spectra during an imaging procedure. The system further includes an energy-resolving detector array (116, D1, D2, D3) that detects radiation traversing the examination region. The energy-resolving detector array (116, D1, D2, D3) resolves the detected radiation over at least two different energy ranges and produces energy-resolved output signals as a function of both emission energy spectrum and energy range. The system further includes a reconstructor (126) that performs a spectral reconstruction of the energy-resolved output signals. In another embodiment, the detector array (116) includes a photon-counting detector array (116).
摘要翻译：成像系统包括围绕检查区域旋转并且发射穿过检查区域的辐射的辐射源（106，T1，T2，T3）。辐射源（106，T1，T2，T3）发射具有在成像过程期间在至少两个不同能量谱之间选择性交替切换的能谱的辐射。该系统还包括检测穿过检查区域的辐射的能量分辨检测器阵列（116，D1，D2，D3）。能量分辨检测器阵列（116，D1，D2，D3）通过至少两个不同的能量范围来解析检测到的辐射，并且产生作为发射能量谱和能量范围的函数的能量分辨的输出信号。该系统还包括执行能量分辨输出信号的频谱重建的重建器（126）。在另一个实施例中，检测器阵列（116）包括光子计数检测器阵列（116）。

6. 发明申请

US20080317311A1 Coherent Scatter Imaging 审中-公开
标题翻译：相干散射成像
公开(公告)号：US20080317311A1
公开(公告)日：2008-12-25
申请号：US11574742
申请日：2005-09-09
申请人： Michael Grass , Jens-Peter Schlomka , Udo Van Stevendaal
发明人： Michael Grass , Jens-Peter Schlomka , Udo Van Stevendaal
IPC分类号： G06K9/00
CPC分类号： G01V5/0025 , G01T1/1644
摘要： A region of interest is identified using a conventional CT or X-ray approach. Then, the region of interest is scanned using a plurality of pencil beams (28) to obtain a plurality of different scattered X-ray spectra. A geometric correction is then applied to each spectrum as if the spectrum was solely due to features in the region of interest. The various spectra recorded using the beams are combined and correlated to determine features of the region of interest (32) whilst minimising the effect of features in the rest of the sample (30).
摘要翻译：使用常规CT或X射线方法识别感兴趣区域。然后，使用多个笔形光束（28）扫描感兴趣区域，以获得多个不同的散射X射线光谱。然后将几何校正应用于每个频谱，好像光谱完全是由于感兴趣区域中的特征。使用光束记录的各种光谱被组合并相关，以确定感兴趣区域（32）的特征，同时最小化样本（30）的其余部分中的特征的影响。

7. 发明授权

US08184883B2 Motion compensated CT reconstruction of high contrast objects 有权
标题翻译：高对比度物体运动补偿CT重建
公开(公告)号：US08184883B2
公开(公告)日：2012-05-22
申请号：US12093458
申请日：2006-11-14
申请人： Michael Grass , Dirk Schaefer , Udo Van Stevendaal
发明人： Michael Grass , Dirk Schaefer , Udo Van Stevendaal
IPC分类号： G06K9/00 , A61B6/03
CPC分类号： A61B6/032 , A61B6/027 , A61B6/12 , A61B6/541 , G06T7/20 , G06T11/006 , G06T2207/10081 , G06T2207/30048 , G06T2211/412
摘要： Cardiac CT imaging using gated reconstruction is currently limited in its temporal and spatial resolution. According to an exemplary embodiment of the present invention, an examination apparatus is provided in which an identification of a high contrast object is performed. This high contrast object is then followed through the phases, resulting in a motion vector field of the high contrast object, on the basis of which a motion compensated reconstruction is then performed.
摘要翻译：使用门控重建的心脏CT成像目前在其时间和空间分辨率方面受到限制。根据本发明的示例性实施例，提供一种检查装置，其中执行高对比度对象的识别。然后，该对比度较高的对象随后进入相位，导致高对比度对象的运动矢量场，然后基于此进行运动补偿重建。

8. 发明申请

US20090141935A1 MOTION COMPENSATED CT RECONSTRUCTION OF HIGH CONTRAST OBJECTS 有权
标题翻译：运动补偿CT重建高对比度物体
公开(公告)号：US20090141935A1
公开(公告)日：2009-06-04
申请号：US12093458
申请日：2006-11-14
申请人： Michael Grass , Dirk Schaefer , Udo Van Stevendaal
发明人： Michael Grass , Dirk Schaefer , Udo Van Stevendaal
IPC分类号： G06K9/00
CPC分类号： A61B6/032 , A61B6/027 , A61B6/12 , A61B6/541 , G06T7/20 , G06T11/006 , G06T2207/10081 , G06T2207/30048 , G06T2211/412
摘要： Cardiac CT imaging using gated reconstruction is currently limited in its temporal and spatial resolution. According to an exemplary embodiment of the present invention, an examination apparatus is provided in which an identification of a high contrast object is performed. This high contrast object is then followed through the phases, resulting in a motion vector field of the high contrast object, on the basis of which a motion compensated reconstruction is then performed.
摘要翻译：使用门控重建的心脏CT成像目前在其时间和空间分辨率方面受到限制。根据本发明的示例性实施例，提供一种检查装置，其中执行高对比度对象的识别。然后，该对比度较高的对象随后进入相位，导致高对比度对象的运动矢量场，然后基于此进行运动补偿重建。

9. 发明授权

US07346143B2 Computer tomography scanner having an adjustable rotational speed 失效
标题翻译：具有可调节旋转速度的计算机断层扫描仪
公开(公告)号：US07346143B2
公开(公告)日：2008-03-18
申请号：US11573355
申请日：2005-08-02
申请人： Robert Manzke , Michael Grass , Udo Van Stevendaal
发明人： Robert Manzke , Michael Grass , Udo Van Stevendaal
IPC分类号： A61B6/00
CPC分类号： A61B6/035 , F16F15/28 , F16F15/36 , G01M1/36
摘要： The invention relates to a computer tomography scanner comprising a gantry, on the rotor of which one or more displaceable masses are arranged. During rotation of the rotor about a rotation axis, the position of each mass can be changed perpendicular to the rotation axis by means of an adjustment unit. By retaining the rotary momentum of the rotor, the rotational speed is increased when the masses are moved toward the rotation axis, and vice versa. As a result, it is possible to maintain a specific ratio between the heart rate of the examined patient and the rotational speed even if the heart rate of the patient changes during the examination.
摘要翻译：本发明涉及一种计算机断层摄影扫描器，其包括在其上布置有一个或多个可移位质量的转子上的台架。在转子围绕旋转轴线旋转期间，每个质量块的位置可以通过调整单元垂直于旋转轴线改变。通过保持转子的旋转动量，当质量朝向旋转轴线移动时，转速增加，反之亦然。结果，即使在检查期间患者的心率发生变化，也可以保持所检查患者的心率与转速之间的比率。

10. 发明申请

US20110182400A1 METHOD AND APPARATUS TO IMPROVE CT IMAGE ACQUISITION USING A DISPLACED GEOMETRY 有权
标题翻译：使用位移几何来改进CT图像采集的方法和装置
公开(公告)号：US20110182400A1
公开(公告)日：2011-07-28
申请号：US13120660
申请日：2009-10-05
申请人： Peter Forthmann , Thomas Koehler , Udo Van Stevendaal , Matthias Bertram , Steffen Wiesner , Colas Schretter
发明人： Peter Forthmann , Thomas Koehler , Udo Van Stevendaal , Matthias Bertram , Steffen Wiesner , Colas Schretter
IPC分类号： A61B6/03 , G01N23/04
CPC分类号： A61B6/032 , A61B5/107 , A61B6/027
摘要： A method and apparatus are provided to improve CT image acquisition using a displaced acquisition geometry. A CT apparatus may be used having a source (102) and a detector (104) transversely displaced from a center (114) of a field of view (118) during acquisition of the projection data. The amount of transverse displacement may be determined based on the size of the object (108). The source and the detector may be adjusted to vary the size of the transverse field of view. The first data set acquired by the detector may be reconstructed and used to simulate missing projection data that could not be acquired by the detector at each projection angle. The measured projection data and the simulated projection data may be used to obtain a second data set. The second data set may be compared to the first data set to produce a corrected data set.
摘要翻译：提供了一种方法和装置，用于改善使用位移采集几何形状的CT图像采集。可以使用CT装置，在获取投影数据期间具有从视场（118）的中心（114）横向移位的源（102）和检测器（104）。可以基于物体（108）的尺寸来确定横向位移量。源和检测器可以被调节以改变横向视场的大小。由检测器获取的第一数据集可以被重构并用于模拟在每个投影角度不能由检测器获取的丢失的投影数据。所测量的投影数据和模拟投影数据可用于获得第二数据集。可以将第二数据集与第一数据集进行比较以产生校正数据集。

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